CN107533898A - Coil component and its manufacture method - Google Patents
Coil component and its manufacture method Download PDFInfo
- Publication number
- CN107533898A CN107533898A CN201780001421.8A CN201780001421A CN107533898A CN 107533898 A CN107533898 A CN 107533898A CN 201780001421 A CN201780001421 A CN 201780001421A CN 107533898 A CN107533898 A CN 107533898A
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- recess
- coil
- electrode terminal
- wire rod
- core
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 24
- 229910052802 copper Inorganic materials 0.000 claims description 24
- 239000010949 copper Substances 0.000 claims description 24
- 238000003466 welding Methods 0.000 claims description 17
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 46
- 229910000859 α-Fe Inorganic materials 0.000 description 19
- 238000005452 bending Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910003962 NiZn Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/10—Connecting leads to windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/06—Fixed inductances of the signal type with magnetic core with core substantially closed in itself, e.g. toroid
- H01F17/062—Toroidal core with turns of coil around it
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
- H01F27/292—Surface mounted devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F2017/0093—Common mode choke coil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Coils Of Transformers For General Uses (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The present invention provides coil component and its manufacture method.Coil component possesses：The core of ring-type；Coil, it is wound in core；And the electrode terminal of installation, it is connected with coil, and includes mounting surface.Coil is formed by connecting multiple wire rod parts.Electrode terminal has the recess to the back side recess with mounting surface opposite side.The back side of the wire rod part of coil and the bottom of recess connects.
Description
Technical field
The present invention relates to coil component and its manufacture method.
Background technology
In the past, as coil component, the line described in Japanese Unexamined Patent Publication 2006-165212 publications (patent document 1) be present
Coil component.Coil component have insulating substrate, be embedded to insulating substrate core, be wound in core coil and via lead wiring with
The electrode portion of coil connection.
Patent document 1：The 006-165212 publications of Japanese Unexamined Patent Publication 2
However it has been found that if above-mentioned conventional coil component is installed on into installation base plate problems be present.That is, electrode
The electrode portion of terminal and coil component connects, when electrode terminal is installed on into installation base plate via scolding tin, if scolding tin rushes because of heat
Hit expansion or shrink, then stress of the electrode terminal by scolding tin.As a result, in the presence of the company between electrode terminal and electrode portion
Socket part point produces the worry of damage.That is, the conducting between electrode terminal and coil is hindered.
The content of the invention
Therefore, problem of the invention is to provide the coil portion for being capable of the conducting between keeping coil and electrode terminal well
Part and its manufacture method.
In order to solve above-mentioned problem, coil component of the invention possesses：
The core of ring-type；
Coil, it is wound in above-mentioned core；And
The electrode terminal of installation, it is connected with above-mentioned coil and comprising mounting surface,
Above-mentioned coil is formed by connecting multiple wire rod parts,
Above-mentioned electrode terminal has the recess to the back side recess with above-mentioned mounting surface opposite side,
The above-mentioned wire rod part of above-mentioned coil is connected with the back side of the bottom of above-mentioned recess.
Here, wire rod part is not printed wiring, but bar-like member.
According to the coil component of the present invention, electrode terminal has the recess that is rearwardly recessed, the wire rod part of coil with it is recessed
The back side connection of the bottom in portion.Thus, when the mounting surface of electrode terminal is installed on into installation base plate via scolding tin, can make recessed
The bottom in portion spaces out with scolding tin.That is, can make coupling part between the bottom of recess and wire rod part and scolding tin pull open away from
From.Thus, even if scolding tin can also be inhaled because thermal shock expands or shrinks by the part between mounting surface and the bottom of recess
The stress of scolding tin is received, as a result, the connection that can suppress between recess and wire rod part disengages.Therefore, it is possible to maintain well
The conducting of coil and electrode terminal.
In addition, in an embodiment of coil component, above-mentioned wire rod part is welded in above-mentioned recess.
According to above-mentioned embodiment, wire rod part is soldered, therefore compared with scolding tin engages, can reduce resistance.
In addition, in an embodiment of coil component,
Above-mentioned electrode terminal includes copper coin with covering the plated film of above-mentioned copper coin,
In the installation surface side of the above-mentioned bottom of above-mentioned recess, above-mentioned copper coin exposes from above-mentioned plated film.
According to above-mentioned embodiment, in the installation surface side of the bottom of recess, copper coin exposes from plated film, therefore can prevent copper
Plate aoxidizes and scolding tin soaks the bottom for arriving recess.Thereby, it is possible to make the bottom of recess further effectively be spaced out with scolding tin,
Connecting portion office between the bottom of recess and wire rod part, it further can effectively avoid the stress of scolding tin.
In addition, in an embodiment of coil component, above-mentioned electrode terminal is on the periphery of the open side of above-mentioned recess
With the connecting portion being connected with installation base plate.
According to above-mentioned embodiment, electrode terminal has the connection being connected with installation base plate on the periphery of the open side of recess
Portion.Thus, when the connecting portion of electrode terminal is installed on installation base plate, electric current is in the wire rod part and installation base being connected with recess
Between plate, recess surrounding with radial flowing.Therefore, it is possible to reduce resistance.
In addition, in an embodiment of coil component,
Above-mentioned coil component, which has, stores above-mentioned core and above-mentioned coil and the shell for installing above-mentioned electrode terminal,
Above-mentioned shell has the hole portion that the above-mentioned recess for above-mentioned electrode terminal is embedded in.
According to above-mentioned embodiment, because shell has the hole portion of the recess insertion of power pole terminal, so electrode terminal
The installation strength installed to shell becomes big.
In addition, in an embodiment of coil component, coil component possesses：
The core of ring-type；
Coil, it is wound in above-mentioned core；
The electrode terminal of installation, it is connected with above-mentioned coil and comprising mounting surface；And
Shell, it covers above-mentioned core and above-mentioned coil, and has hole portion in bottom surface,
Above-mentioned coil is formed by connecting multiple wire rod parts,
Above-mentioned electrode terminal has the recess to the back side recess with above-mentioned mounting surface opposite side,
The above-mentioned recess arrangement of above-mentioned electrode terminal is that the above-mentioned hole portion of above-mentioned shell is embedded in from above-mentioned bottom surface side,
The above-mentioned wire rod part of above-mentioned coil is connected with the back side of the bottom of above-mentioned recess.
According to above-mentioned embodiment, electrode terminal has the recess that is rearwardly recessed, the wire rod part of coil and recess
The back side connection of bottom.Thus, when the mounting surface of electrode terminal is installed on into installation base plate via scolding tin, recess can be made
Bottom spaces out with scolding tin.That is, the coupling part between the bottom of recess and wire rod part can be made to be spaced out with scolding tin.By
This, also can be by partially absorbing weldering even if scolding tin is because of thermal shock expansion or shrinks between mounting surface and the bottom of recess
The stress of tin, as a result, the connection that can suppress between recess and wire rod part disengages.Therefore, it is possible to keeping coil well
Conducting between electrode terminal.Further, since shell have power pole terminal recess insertion hole portion, so electrode terminal to
The installation strength of shell installation becomes big.
In addition, in an embodiment of the manufacture method of coil component, coil component possesses：
The core of ring-type；
Coil, it is wound in above-mentioned core, and is formed by connecting multiple wire rod parts；And the electricity of installation
Extreme son, it is connected with above-mentioned coil, comprising mounting surface, and has to the back side recess with above-mentioned mounting surface opposite side
Recess, wherein,
In the state of the above-mentioned wire rod part of above-mentioned coil with the rear-face contact of the bottom of above-mentioned recess, from above-mentioned recess
The installation surface side of bottom welded, above-mentioned wire rod part is connected with the back side of the bottom of above-mentioned recess.
According to above-mentioned embodiment, coil wire rod part and recess bottom rear-face contact in the state of, from recessed
The installation surface side of the bottom in portion is welded, and makes the back side connection of the bottom of wire rod part and recess, therefore is welded and become easy.
In addition, electrode terminal has the back side company of the recess being rearwardly recessed, the wire rod part of coil and the bottom of recess
Connect.Thus, when the mounting surface of electrode terminal is installed on into installation base plate via scolding tin, the bottom and scolding tin that can make recess are drawn
Open distance.That is, the coupling part between the bottom of recess and wire rod part can be made to be spaced out with scolding tin.Thus, even if scolding tin
Because thermal shock expand or shrink, also can by the stress for partially absorbing scolding tin between the mounting surface in recess and bottom,
As a result, the connection that can suppress between recess and wire rod part disengages.Therefore, it is possible to keeping coil well and electrode terminal
Between conducting.
In addition, in an embodiment of coil component, Laser Welding is carried out from the installation surface side of the bottom of above-mentioned recess
Connect, above-mentioned wire rod part is connected with the back side of the bottom of above-mentioned recess.
According to above-mentioned embodiment, due to carrying out laser welding from the installation surface side of the bottom of recess, make wire rod part with
The back side connection of the bottom of recess, so when electrode terminal includes copper coin and covers the plated film of copper coin, in the bottom of recess
Surface side is installed, copper coin exposes from plated film.Thus, copper coin is aoxidized, and scolding tin wetting can be prevented to the bottom of recess.Therefore, it is possible to
The bottom of recess is set further effectively to be spaced out with scolding tin, the connecting portion office between the bottom of recess and wire rod part,
It further can effectively avoid the stress of scolding tin.
The effect of invention
According to the coil component of the present invention, because electrode terminal has the recess being rearwardly recessed, the wire rod part of coil
It is connected with the back side of the bottom of recess, so when the mounting surface of electrode terminal is installed on into installation base plate via scolding tin, can
The bottom and scolding tin for making recess space out, and can well between keeping coil and electrode terminal conducting.
Brief description of the drawings
Fig. 1 is the top perspective view for the coil component for representing an embodiment of the invention.
Fig. 2 is the lower section stereogram of coil component.
Fig. 3 is the top perspective view for the inside for representing coil component.
Fig. 4 is the exploded perspective view of coil component.
Fig. 5 is the sectional view of the first electrode terminals side of coil component.
Fig. 6 is the sectional view for the connection status for representing coil and electrode terminal.
Fig. 7 is the sectional view for the connection method for representing coil and electrode terminal.
Fig. 8 A are the front views of first electrode terminal.
Fig. 8 B are the top views of first electrode terminal.
Fig. 8 C are the side views of first electrode terminal.
Embodiment
Hereinafter, the present invention is described in detail by embodiment illustrated.
(structure of coil component)
Fig. 1 is the top perspective view for the coil component for representing an embodiment of the invention.Fig. 2 is under coil component
Square stereogram.Fig. 3 is the top perspective view for the inside for representing coil component.Fig. 4 is the exploded perspective view of coil component.
As shown in figures 1-4, coil component 1 have shell 2, the ring-type being accommodated in shell 2 core 3, roll up opposed to each other
It is around in the coil 42 of first coil 41 and second of core 3 and is installed on the first to fourth of the coil 42 of first coil 41 and second
Ferrite elements 61~64.Coil component 1 is common mode choke coil.
Shell 2 has the cap 22 of box-like of the base plate 21 with covering base plate 21.Shell 2 is for example by ceramics or PPS
Formed Deng resin.Base plate 21 is provided with core 3.Base plate 21 is provided with core 3, makes the central axis and base plate 21 of core 3
It is orthogonal.The central axis of core 3 refers to the central axis of the internal diameter hole portion of core 3.From core 3 it is central axial from, (the bottom plate of shell 2
Portion 21 and cap 22) shape be rectangle.In the present embodiment, the shape of shell 2 is square.In addition, the shape of shell 2
It can also be rectangle.
The electrode terminal 51~54 of installation is installed in base plate 21.First electrode terminal 51 and second electrode terminal 52
Positioned at mutually opposing 2 corner of the rectangle of base plate 21, the 3rd electrode terminal 53 and the 4th electrode terminal 54 are located at bottom plate
Mutually opposing 2 corner of the rectangle in portion 21.First electrode terminal 51 and the 3rd electrode terminal 53 are mutually opposing, second electrode
Terminal 52 and the 4th electrode terminal 54 are mutually opposing.
Electrode terminal 51~54 is installed on the bottom surface 2a of base plate 21.Base plate 21 is provided with the outside of insertion shell 2
With the hole portion 21a of inner side.Electrode terminal 51~54 is overlapping with hole portion 21a, and is exposed from hole portion 21a to the inner side of shell 2.Electricity
Extreme son 51~54 is by being adhesively fixed in shell 2.
From central axial, the shape (that is, the shape of the inner peripheral surface of core 3 and outer peripheral face) of core 3 is oval (track shape
Shape).From central axial, core 3 include along major axis extension and opposed pairs long side part 31 and along short axle extension and
Opposed pairs short side part 32.In addition, the shape of core 3 can also be circular, rectangle or ellipse.
Core 3 is formed such as the ceramic core by metal-cored or ferrite.Core 3 has in central axial 2 opposed end faces.
One end face is opposed with the inner surface of base plate 21.Another end face is opposed with the inner surface of cap 22.Core 3 is accommodated in shell 2,
Its long axis direction is consistent with an edge direction of shell 2 (base plate 21).
First coil 41 is wound in core 3 between first electrode terminal 51 and second electrode terminal 52.First coil 41
One end is connected with first electrode terminal 51.The other end of first coil 41 is connected with second electrode terminal 52.
Second coil 42 is wound in core 3 between the 3rd electrode terminal 53 and the 4th electrode terminal 54.Second coil 42
One end is connected with the 3rd electrode terminal 53.The other end of second coil 42 is connected with the 4th electrode terminal 54.
The coil 42 of first coil 41 and second is wound along long axis direction, opposed with the short-axis direction of core 3.That is, first coil
41 are wound in a long side part 31 of core 3, and the second coil 42 is wound in another long side part 31 of core 3.First coil 41
The coiling direction that the coiling direction and the second coil 42 wound to core 3 is wound to core 3 is opposite direction.The number of turns of first coil 41
It is identical with the number of turns of the second coil 42.
First to fourth ferrite elements 61~64 are formed such as the magnetic by NiZn ferrites, MnZn ferrites.Iron
Oxysome part 61~64 is formed as tubular, is configured at four corners of shell 2.61~64 mutual axis of ferrite elements and core
3 centerline axis parallel.Ferrite elements 61~64 are located at the radial outside of core 3.
First ferrite elements 61 are located at a side (side of first electrode terminal 51) for first coil 41.Second ferrite zero
Part 62 is located at the another side (side of second electrode terminal 52) of first coil 41.3rd ferrite elements 63 are located at the second coil 42
A side (side of the 3rd electrode terminal 53).4th ferrite elements 64 are located at another side (the 4th electrode of the second coil 42
The side of terminal 54).
First coil 41 is formed by connecting by multiple wire rod parts such as being engaged by laser welding, spot welding, scolding tin.
Multiple wire rod parts are not printed wiring, are bar-like part.Wire rod part can have rigidity, or can also have flexibility.
Multiple wire rod parts include the straight line Wire rod portion of the bending wire rod part 410 for being bent into substantially U-shaped and substantially linear extension
Part 411,412,413.First coil 41 is from one end to the other end successively comprising first straight line wire rod part 411, second straight line line
Material part 412, multigroup (being in the present embodiment 5 groups) bending wire rod part 410 and the 3rd straight line wire rod part 413 and
First straight line wire rod part 411.The length of first, second, third straight line wire rod part 411,412,413 is different.
Wire rod part 410~413 is, for example, polyamidoimide copper cash, has copper cash and covers the insulating coating of copper cash.
The thickness of insulating coating is, for example, 0.02mm~0.04mm.In addition, insulating coating is covered by insulating coating, the material of insulating coating
It is polyamide-imide resin.
Bending wire rod part 410 and the 3rd straight line wire rod part 413 by laser welding, spot welding, scolding tin such as being engaged
Interactive connection.One end of the 3rd straight line wire rod part 413 is connected in one end of bending wire rod part 410, by the 3rd straight line wire rod
The other end of part 413 is connected with one end of other bending wire rod parts 410.By the way that the connection, multiple bending lines are repeated
The straight line wire rod part 413 of material part 410 and the 3rd is spirally wound in core 3.That is, 1 group of bending wire rod part 410 and are passed through
Three straight line wire rod parts 413, form the unit element of 1 circle.First coil 41 is wound with 5 circles on core 3.
In the first ferrite elements 61 and the second ferrite elements 62 inserted with first straight line wire rod part 411.Insertion the
The first straight line wire rod part 411 of one ferrite elements 61 is connected with first electrode terminal 51.It is inserted into the second ferrite elements
62 first straight line wire rod part 411 is connected with second electrode terminal 52
Identical with first coil 41, the second coil 42 is made up of multiple wire rod parts.That is, the second coil 42 is from one end to another
One end is successively comprising first straight line wire rod part 421, second straight line wire rod part 422, multigroup (being in the present embodiment 5 groups)
Bending wire rod part 420 and the 3rd straight line wire rod part 423 and first straight line wire rod part 421.Bending wire rod part 420
Alternately connected with the 3rd straight line wire rod part 423, be wound in core 3.Second coil 42 is wound with 5 circles on core 3.First straight line line
Material part 421 inserts the 3rd ferrite elements 63 and the 4th ferrite elements 64.
Fig. 5 is the sectional view of the side of first electrode terminal 51 of coil component 1.In Figure 5, omit and describe the first ferrite zero
Part 61.Hereinafter, first electrode terminal 51 is illustrated, but the second to the 4th electrode terminal 52~54 is also identical, therefore omit
Its explanation.
As shown in figure 5, the back side of opposite side of the first electrode terminal 51 with mounting surface 150a and mounting surface 150a
150b.Mounting surface 150a turns into the face for being installed on installation base plate.
First electrode terminal 51 has the recess 150 of rearwardly 150b sides depression.Recess 150 has bottom 151 and set
In the surrounding wall portion 152 of the surrounding of bottom 151.First electrode terminal 51 has connecting portion 155 on the periphery of the open side of recess 150.
Connecting portion 155 is connected with installation base plate.
The first straight line wire rod part 411 of first coil 41 is connected with the back side 150b sides of the bottom 151 of recess 150.The
The end face of one straight line Wire rod portion part 411 is welded in recess 150.As welding, such as there are laser welding, spot welding.
Here, first electrode terminal 51 includes the plated film of such as copper coin and covering copper coin.Plated film is, for example, Ni/Sn coating.
If moreover, carry out laser welding, the peace in the bottom 151 of recess 150 from the mounting surface 150a sides of the bottom 151 of recess 150
Dress face 150a sides, copper coin expose from plated film.
The recess 150 of first electrode terminal 51 is embedded into the hole portion 21a of shell 2 from bottom surface 2a sides.Now, recess 150
Bottom 151 is located at the inner side of shell 2.The surrounding wall portion 152 of recess 150 engages with hole portion 21a inner surface.
According to above-mentioned coil component 1, first electrode terminal 51 has recess 150, the first straight line wire rod of first coil 41
Part 411 is connected with the back side 150b sides of the bottom 151 of recess 150.Thus, as shown in fig. 6, by first electrode terminal 51
When mounting surface 150a is installed on installation base plate S via scolding tin W, the bottom 151 and scolding tin W that can make recess 150 space out.
That is, the coupling part P and scolding tin W between the bottom 151 of recess 150 and first straight line wire rod part 411 can be made to space out.By
This, also can be by between the mounting surface 150a in recess 150 and bottom 151 even if scolding tin W is because of thermal shock expansion or shrinks
Part (that is, the surrounding wall portion 152 of recess 150) absorb scolding tin W stress, as a result, recess 150 and first straight can be suppressed
Connection between line wire rod part 411 disengages.Therefore, it is possible to maintain leading between first coil 41 and first electrode terminal 51 well
It is logical.
Even if in addition, the overstriking of first straight line wire rod part 411 and rigidity become big, can also pass through the installation at recess 150
Part (that is, the surrounding wall portion 152 of recess 150) between face 150a and bottom 151 absorbs scolding tin W stress, can suppress scolding tin W
Rupture.
According to above-mentioned coil component 1, because first straight line wire rod part 411 is welded in recess 150, so, connect with scolding tin
Conjunction is compared, and resistance can be reduced by doing so.Here, it is sudden and violent from plated film in the mounting surface 150a sides of the bottom 151 of recess 150, copper coin
During dew, copper coin oxidation, it can prevent scolding tin W wettings from occurring to such case of bottom 151 of recess 150.Thereby, it is possible to make recess
150 bottom 151 further effectively spaces out with scolding tin W, in the bottom 151 of recess 150 and first straight line wire rod part
At coupling part P between 411, scolding tin W stress further can be effectively avoided.
According to above-mentioned coil component 1, first electrode terminal 51 has on the periphery of the open side of recess 150 and installation base plate
The connecting portion 155 of S connections.Thus, when the connecting portion 155 of first electrode terminal 51 is installed on installation base plate S, electric current with it is recessed
Between first straight line wire rod part 411 and installation base plate S that portion 150 connects, radially flowed in the surrounding of recess 150.Therefore,
Resistance can be reduced.
According to above-mentioned coil component 1, because shell 2 has the hole portion of the insertion of recess 150 for first electrode terminal 51
21a, so first electrode terminal 51 becomes big to the installation strength that shell 2 is installed.
In addition, with regard to the second to the 4th electrode terminal 52~54 with for first straight line wire rod part 411,421, also functioning to phase
Same effect.
(manufacture method of coil component)
Next, the manufacture method of explanation coil component 1.
As shown in fig. 7, first straight line wire rod part 411 and the back side of the bottom 151 of recess 150 in first coil 41
In the state of 150b contacts, welded from the mounting surface 150a sides of the bottom 151 of recess 150, make first straight line wire rod part
411 are connected with the back side 150b sides of the bottom 151 of recess 150.
Specific narration is then the mounting surface 150a sides for the bottom 151 that laser-beam welding machine 100 is configured to recess 150, from swashing
Photocoagulator 100 projects laser L to the mounting surface 150a sides of the bottom 151 of recess 150, and first straight line wire rod part 411 is swashed
Flush weld is connected to the bottom 151 of recess 150.In addition to laser welding or spot welding etc..
In addition, the second to the 4th electrode terminal 52~54 is directed to, it is also identical with first electrode terminal 51, therefore omit its and say
It is bright.
Here, first electrode terminal 51 is embedded in the hole portion 21a of shell 2 from bottom surface 2a sides, then from the bottom of recess 150
151 mounting surface 150a sides are welded, by first straight line wire rod part 411 and the back side 150b sides of the bottom 151 of recess 150
Connection.Like this, in welding, pollutant will not enter the inside of shell 2.
In addition it is also possible to it is to connect the back side 150b sides of first straight line wire rod part 411 and the bottom 151 of recess 150
Connect, then first electrode terminal 51 is embedded in the hole portion 21a of shell 2.Like this, first straight line wire rod part can confirmed
After connection between 411 and recess 150, they are assembled in shell 2.
As shown in figure 4, assembling core 3 is accommodated in the work in shell 2 with the process of coil 41,42, by core 3 and coil 41,42
Sequence or before or after the process of connection first straight line wire rod part 411 and first electrode terminal 51.
According to the manufacture method of above-mentioned coil component 1, in the first straight line wire rod part 411 and recess of first coil 41
In the state of the back side 150b of 150 bottom 151 forms contact, carried out from the mounting surface 150a sides of the bottom 151 of recess 150
Welding, makes first straight line wire rod part 411 be connected with the back side 150b sides of the bottom 151 of recess 150, and therefore, welding becomes to hold
Easily.In addition, as described above, the coil component 1 so manufactured can absorb scolding tin W stress, suppress recess 150 and first straight
Connection between line wire rod part 411 disengages.
Here, when first electrode terminal 51 includes copper coin and covers the plated film of copper coin, if from the bottom 151 of recess 150
Mounting surface 150a sides carry out laser welding, make the back side 150b of the bottom 151 of first straight line wire rod part 411 and recess 150
Side connects, then is exposed in the mounting surface 150a sides of the bottom 151 of recess 150, copper coin from plated film.Thus, the table of exposed copper coin
Face is oxidized into cupric oxide, and scolding tin W wettings can be prevented to the bottom 151 of recess 150.Therefore, it is as described above, in recess
At coupling part P between 150 bottom 151 and first straight line wire rod part 411, it further can effectively avoid scolding tin W's
Stress.
In addition, with regard to the second to the 4th electrode terminal 52~54 with for first straight line wire rod part 411,421, also functioning to phase
Same effect.
(concrete structure of electrode terminal)
Fig. 8 A are the front views of first electrode terminal.Fig. 8 B are the top views of first electrode terminal.Fig. 8 C are first electrodes
The side view of terminal.
As figs. 8 a to 8 c, first electrode terminal 51 not only has recess 150 and connecting portion 155, and with from even
The rising portions 156 that socket part 155 erects upward.Identical with connecting portion 155, rising portions 156 are fixed on shell 2 by bonding.
Also, when making connecting portion 155 be connected with installation base plate by scolding tin, scolding tin can soak rising portions 156, and can improve
The reliability of connection.
One example of material and size to first electrode terminal 51 illustrates.As material, phosphorus is used in mother metal
Bronze, Ni coating (2 μm of thickness) and Sn coating (matt, 3 μm of thickness) are used in surface treatment.Rising portions 156 from installation
The height H1 that face 150a is started at is 2mm, and the height H2 started at from mounting surface 150a of recess 150 is 0.4mm.Connecting portion 155
Width W1 is 5.1mm, and the length L1 of connecting portion 155 is 6.8mm.The width W2 of the bottom 151 of recess 150 is 2.1mm, recess
The length L2 of 150 bottom 151 is 2.1mm.The thickness of first electrode terminal 51 is 0.2mm.
In addition, for the second to the 4th electrode terminal 52~54, it is also identical with first electrode terminal 51, therefore omit it
Explanation.The structure of electrode terminal is not limited to said structure.
In addition, the present invention is not limited to above-mentioned embodiment, can be carried out in the scope for not departing from the purport of the present invention
Design alteration.
Description of reference numerals：
1 ... coil component；2 ... shells；2a ... bottom surfaces；21 ... base plates；21a ... hole portions；22 ... caps；3 ... cores；31…
Long side part；32 ... short side parts；41 ... first coils；410 ... bending wire rod parts；411~413 ... first to the 3rd straight line
Wire rod part；42 ... second coils；420 ... bending wire rod parts；421~423 ... first to the 3rd straight line wire rod part；51~
54 ... first to fourth electrode terminals；61~64 ... first to fourth ferrite elements；150 ... recesses；150a ... mounting surfaces；
150b ... the back sides；151 ... bottoms；152 ... surrounding wall portions；155 ... connecting portions；156 ... rising portions；P ... coupling parts；S ... is installed
Substrate；W ... scolding tin.
Claims (8)
1. a kind of coil component, wherein, possess：
The core of ring-type；
Coil, it is wound in the core；And
The electrode terminal of installation, it is connected with the coil, and comprising mounting surface,
The coil is formed by connecting multiple wire rod parts,
The electrode terminal has the recess to the back side recess with the mounting surface opposite side,
The wire rod part of the coil is connected with the back side of the bottom of the recess.
2. coil component according to claim 1, wherein,
The wire rod part is welded in the recess.
3. coil component according to claim 1 or 2, wherein,
The electrode terminal includes copper coin and covers the plated film of the copper coin,
In the installation surface side of the bottom of the recess, the copper coin exposes from the plated film.
4. the coil component according to any one of claims 1 to 3, wherein,
The electrode terminal has the connecting portion being connected with installation base plate on the periphery of the open side of the recess.
5. the coil component according to any one of Claims 1 to 4, wherein,
The coil component, which has, stores the core and the coil and the shell for installing the electrode terminal,
The shell has the hole portion that the recess for the electrode terminal is embedded in.
6. a kind of coil component, wherein, possess：
The core of ring-type；
Coil, it is wound in the core；
The electrode terminal of installation, it is connected with the coil, and includes mounting surface；And
Shell, it covers the core and the coil, and has hole portion in bottom surface,
The coil is formed by connecting multiple wire rod parts,
The electrode terminal has the recess to the back side recess with the mounting surface opposite side,
The recess arrangement of the electrode terminal is that the hole portion of the shell is embedded in from the bottom surface side,
The wire rod part of the coil is connected with the back side of the bottom of the recess.
7. a kind of manufacture method of coil component, the coil component possess：
The core of ring-type；
Coil, it is wound in the core, is formed by connecting multiple wire rod parts；And
The electrode terminal of installation, it is connected with the coil, comprising mounting surface, and has to opposite with the mounting surface one
The recess of the back side recess of side, wherein,
In the state of the wire rod part of the coil with the rear-face contact of the bottom of the recess, from the bottom of the recess
The installation surface side in portion is welded, and the wire rod part is connected with the back side of the bottom of the recess.
8. the manufacture method of coil component according to claim 7, wherein,
Laser welding is carried out from the installation surface side of the bottom of the recess, makes the wire rod part and the back of the body of the bottom of the recess
Face connects.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016074225 | 2016-04-01 | ||
| JP2016-074225 | 2016-04-01 | ||
| PCT/JP2017/010171 WO2017169737A1 (en) | 2016-04-01 | 2017-03-14 | Coil component and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107533898A true CN107533898A (en) | 2018-01-02 |
| CN107533898B CN107533898B (en) | 2019-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201780001421.8A Active CN107533898B (en) | 2016-04-01 | 2017-03-14 | Coil component and its manufacturing method |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11348721B2 (en) |
| JP (1) | JP6394820B2 (en) |
| CN (1) | CN107533898B (en) |
| DE (1) | DE112017000026T5 (en) |
| WO (1) | WO2017169737A1 (en) |
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| CN110223828A (en) * | 2018-03-01 | 2019-09-10 | 株式会社村田制作所 | Surface mounting inductor |
| CN110246681A (en) * | 2018-03-07 | 2019-09-17 | 株式会社村田制作所 | The manufacturing method of coil component and the manufacturing device of coil component |
| CN110970206A (en) * | 2018-09-28 | 2020-04-07 | 范云光 | Transformer for pulse filter |
| CN112530663A (en) * | 2019-09-19 | 2021-03-19 | 株式会社村田制作所 | Inductor component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7352154B2 (en) * | 2019-09-19 | 2023-09-28 | 株式会社村田製作所 | Inductor parts and methods of manufacturing inductor parts |
| WO2023042512A1 (en) * | 2021-09-17 | 2023-03-23 | 株式会社村田製作所 | Electronic component |
| WO2023176738A1 (en) * | 2022-03-18 | 2023-09-21 | 株式会社村田製作所 | Coil component and method for manufacturing coil component |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107533898B (en) | 2019-09-10 |
| DE112017000026T5 (en) | 2017-12-21 |
| JPWO2017169737A1 (en) | 2018-04-05 |
| US20180025831A1 (en) | 2018-01-25 |
| US11348721B2 (en) | 2022-05-31 |
| JP6394820B2 (en) | 2018-09-26 |
| WO2017169737A1 (en) | 2017-10-05 |
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